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chink in (one's)/the armor

A minor but very detrimental flaw or weakness. Yeah, he's brilliant, but his violent temper has destroyed many business relationships—it's a real chink in his armor. The criminal's tendency to use his own cell phone to conduct business was the chink in the armor the police needed to put him in jail.
See also: armor, chink

chink up

To fill in or patch narrow openings, such as cracks or fissures (chinks), of something. A noun or pronoun can be used between "chink" and "up." We live in an area that experiences a lot of earthquakes each year, so we've gotten pretty good at chinking up the walls of our house.
See also: chink, up
Farlex Dictionary of Idioms. © 2022 Farlex, Inc, all rights reserved.

chink in one's armor

Fig. a special weakness that provides a means for attacking or impressing someone otherwise invulnerable. (Alludes to an opening in a suit of armor that allows a weapon to penetrate.) Jane's insecurity is the chink in her armor. The boss seems mean, but the chink in his armor is that he is easily flattered.
See also: armor, chink
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs. © 2002 by The McGraw-Hill Companies, Inc.

chink in one's armor

A vulnerable area, as in Putting things off to the last minute is the chink in Pat's armor and is bound to get her in trouble one day . This term relies on chink in the sense of "a crack or gap," a meaning dating from about 1400 and used figuratively since the mid-1600s.
See also: armor, chink
The American Heritage® Dictionary of Idioms by Christine Ammer. Copyright © 2003, 1997 by The Christine Ammer 1992 Trust. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

a chink in someone's armour

If someone or something has a chink in their armour, they have a weakness that people can take advantage of, although they seem very strong and successful. Note: `Armour' is spelled `armor' in American English. With their superior knowledge, they might find the chinks in his armour. Labour leaders hope to use their annual conference to attack what they currently see as the most vulnerable chink in the government's armour. Note: A chink is a small hole or opening.
See also: armour, chink
Collins COBUILD Idioms Dictionary, 3rd ed. © HarperCollins Publishers 2012

a chink in someone's armour

a weak point in someone's character, arguments, or ideas which makes them vulnerable to attack or criticism.
See also: armour, chink
Farlex Partner Idioms Dictionary © Farlex 2017

a chink in somebody’s ˈarmour

(British English) (American English a chink in somebody’s ˈarmor) a weakness in somebody’s argument, character, etc., that can be used in an attack: The one chink in her armour is the lack of a sense of humour. She hates people laughing at her.
A chink is a small hole.
See also: armour, chink
Farlex Partner Idioms Dictionary © Farlex 2017

chink in one's armor, a

A vulnerable spot, a weakness. The term alludes to the medieval knight’s armor made of mail—interlinked rings of metal jointed at various points. When a crack, or chink, developed between the links or joints, he was less protected against a spear or arrow. The noun “chink” has been used figuratively for such a fissure since the 1600s, and the current term came soon afterward. See also Achilles' heel.
See also: chink
The Dictionary of Clichés by Christine Ammer Copyright © 2013 by Christine Ammer
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References in periodicals archive ?
Last night, it emerged that Detective Constable Neil Thompson was taken off the inquiry after he said the word "chink" during an interview with David Eden, who was then a suspect.
After a Kempton maiden win in February, Andrew Balding sent his Dr Fong colt into handicaps and Chink Of Light ran with plenty of credit in taking the silver at the Sunbury course and Ffos Las.
As I read recently: "He jumps like a buck and has the speed of a cheetah." No chinks here, will win doing handstands.
Those desperate to oppose the long odds-on favourite will be looking for some chink, and trends often provide such ammunition, but in this case a chink is hard to find.
It has all been all doom and gloom but at least there is a chink of light now."
Instead it's a birthday celebration - but even this little chink of joy is extinguished in less time than it takes to blow out the candles.
Now another chink has appeared in his carefully constructed everyman facade as we learn he is a crack shot who likes nothing better than blasting magnificent animals off the face of the earth.
I'll give you evens that before the week is out, he tells Beijing to do something about the chink in the ozone layer
"It's quite a gory operation, but I'm looking forward to getting it done and seeing a chink of light at the end of the tunnel.
A golfer with a solid all-round game, the South Carolina man appears to have only one chink in his armour - the ridiculous middle name of Currie.
A 'CHINK of light' has appeared in the ongoing feud between Cork City and rebel playmaker George O'Callaghan - who could still play a part in their ailing Champions League campaign next week.
Too big to travel freely along the average lung capillary, neutrophils normally squeeze through like mice through a chink in a baseboard.
Members of Birmingham's Stolen Heart foundation were delighted by the ruling which they say is the first 'chink in the bureaucratic wall' surrounding the legality of tissue research.